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  • Android Actionbar Tabs + Fragments + Service

    - by Vladimir
    So, I have 3 problems with my code: 1) I want that each tab saves its state. So that a TextView shows changed text if it was changed. 2) if I go to Tab2 then to Tab1 I can't see the content of the fragments. Only if I touch on the already selected tab, it shows me the content 3) I can't correctly connect/bind and unbind service to Fragment Text must be changed from Service. Please help, I don't know how I realize my intent. MyActivity.java package com.example.tabs; import android.app.ActionBar; import android.app.ActionBar.Tab; import android.app.Activity; import android.app.ActivityManager; import android.app.ActivityManager.RunningServiceInfo; import android.app.Fragment; import android.app.FragmentTransaction; import android.content.ComponentName; import android.content.Context; import android.content.Intent; import android.content.ServiceConnection; import android.content.SharedPreferences; import android.os.Bundle; import android.os.Handler; import android.os.IBinder; import android.os.Message; public class MyActivity extends Activity { private static String ACTION_BAR_INDEX = "ACTION_BAR_INDEX"; private Tab tTab1; private Tab tTab2; private static MyService.MyBinder myBinder; private static Intent myServiceIntent; private static MyService myService; private TabListener<Tab1> tab1Listener; private TabListener<Tab2> tab2Listener; private static ServiceConnection myConnection = new ServiceConnection() { public void onServiceConnected(ComponentName name, IBinder binder) { myBinder = (MyService.MyBinder) binder; myService = myBinder.getService(); myBinder.setCallbackHandler(myServiceHandler); } public void onServiceDisconnected(ComponentName name) { myService = null; myBinder = null; } }; /** Callbackhandler. */ private static Handler myServiceHandler = new Handler() { public void handleMessage(Message message) { super.handleMessage(message); Bundle bundle = message.getData(); if (bundle != null) { String text = bundle.getString("Text1", ""); if (!text.equals("")) { } } } }; protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); myServiceIntent = new Intent(this, MyService.class); bindService(myServiceIntent, myConnection, Context.BIND_AUTO_CREATE); if (!isServiceRunning()) { startService(myServiceIntent); } final ActionBar actionBar = getActionBar(); actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS); actionBar.setDisplayShowTitleEnabled(false); tTab1 = actionBar.newTab(); tab1Listener = new TabListener<Tab1>(this, R.id.fl_main, Tab1.class); tTab1.setTag("Tab_1"); tTab1.setText("Tab_1"); tTab1.setTabListener(tab1Listener); tTab2 = actionBar.newTab(); tab2Listener = new TabListener<Tab2>(this, R.id.fl_main, Tab2.class); tTab2.setTag("Tab_2"); tTab2.setText("Tab_2"); tTab2.setTabListener(tab2Listener); actionBar.addTab(tTab1, 0); actionBar.addTab(tTab2, 1); } @Override public void onResume() { super.onResume(); SharedPreferences sp = getPreferences(Activity.MODE_PRIVATE); int actionBarIndex = sp.getInt(ACTION_BAR_INDEX, 0); getActionBar().setSelectedNavigationItem(actionBarIndex); } protected void onSaveInstanceState(Bundle outState) { // Save the current Action Bar tab selection int actionBarIndex = getActionBar().getSelectedTab().getPosition(); SharedPreferences.Editor editor = getPreferences(Activity.MODE_PRIVATE).edit(); editor.putInt(ACTION_BAR_INDEX, actionBarIndex); editor.apply(); // Detach each of the Fragments FragmentTransaction ft = getFragmentManager().beginTransaction(); if (tab2Listener.fragment != null) { ft.detach(tab2Listener.fragment); } if (tab1Listener.fragment != null) { ft.detach(tab1Listener.fragment); } ft.commit(); super.onSaveInstanceState(outState); } protected void onRestoreInstanceState(Bundle savedInstanceState) { // Find the recreated Fragments and assign them to their associated Tab // Listeners. tab1Listener.fragment = getFragmentManager().findFragmentByTag(Tab1.class.getName()); tab2Listener.fragment = getFragmentManager().findFragmentByTag(Tab2.class.getName()); // Restore the previous Action Bar tab selection. SharedPreferences sp = getPreferences(Activity.MODE_PRIVATE); int actionBarIndex = sp.getInt(ACTION_BAR_INDEX, 0); getActionBar().setSelectedNavigationItem(actionBarIndex); super.onRestoreInstanceState(savedInstanceState); } public boolean isServiceRunning() { ActivityManager manager = (ActivityManager) getSystemService(Context.ACTIVITY_SERVICE); for (RunningServiceInfo service : manager.getRunningServices(Integer.MAX_VALUE)) { if (MyService.class.getName().equals(service.service.getClassName())) { return true; } } return false; } @Override protected void onDestroy() { super.onDestroy(); unbindService(myConnection); stopService(myServiceIntent); } public static class TabListener<T extends Fragment> implements ActionBar.TabListener { private Fragment fragment; private Activity activity; private Class<T> fragmentClass; private int fragmentContainer; public TabListener(Activity activity, int fragmentContainer, Class<T> fragmentClass) { this.activity = activity; this.fragmentContainer = fragmentContainer; this.fragmentClass = fragmentClass; } public void onTabReselected(Tab tab, FragmentTransaction ft) { if (fragment != null) { ft.attach(fragment); } } public void onTabSelected(Tab tab, FragmentTransaction ft) { if (fragment == null) { String fragmentName = fragmentClass.getName(); fragment = Fragment.instantiate(activity, fragmentName); ft.add(fragmentContainer, fragment, fragmentName); } else { ft.detach(fragment); } } public void onTabUnselected(Tab tab, FragmentTransaction ft) { if (fragment != null) { ft.detach(fragment); } } } } MyService.java package com.example.tabs; import android.app.Service; import android.content.Intent; import android.os.Binder; import android.os.Bundle; import android.os.Handler; import android.os.IBinder; import android.os.Message; public class MyService extends Service { private final IBinder myBinder = new MyBinder(); private static Handler myServiceHandler; public IBinder onBind(Intent intent) { return myBinder; } public int onStartCommand(Intent intent, int flags, int startId) { super.onStartCommand(intent, flags, startId); return START_STICKY; } public void sendMessage(String sText, int id) { Bundle bundle = new Bundle(); bundle.putString("Text" + id, sText); Message bundleMessage = new Message(); bundleMessage.setData(bundle); myServiceHandler.sendMessage(bundleMessage); } public class MyBinder extends Binder { public MyService getService() { return MyService.this; } public void setCallbackHandler(Handler myActivityHandler) { myServiceHandler = myActivityHandler; } public void removeCallbackHandler() { myServiceHandler = null; } } } Tab1.java package com.example.tabs; import android.app.Activity; import android.app.Fragment; import android.content.ComponentName; import android.content.Context; import android.content.Intent; import android.content.ServiceConnection; import android.os.Bundle; import android.os.Handler; import android.os.IBinder; import android.os.Message; import android.view.LayoutInflater; import android.view.View; import android.view.View.OnClickListener; import android.view.ViewGroup; import android.widget.Button; import android.widget.EditText; import android.widget.TextView; public class Tab1 extends Fragment { public static String TAG = Tab1.class.getClass().getSimpleName(); private static TextView tvText; private EditText editText; private static MyService.MyBinder myBinder; private static Intent myServiceIntent; private static MyService myService; private static ServiceConnection myConnection = new ServiceConnection() { public void onServiceConnected(ComponentName name, IBinder binder) { myBinder = (MyService.MyBinder) binder; myService = myBinder.getService(); myBinder.setCallbackHandler(myServiceHandler); } public void onServiceDisconnected(ComponentName name) { myService = null; myBinder = null; } }; /** Callbackhandler. */ private static Handler myServiceHandler = new Handler() { public void handleMessage(Message message) { super.handleMessage(message); Bundle bundle = message.getData(); if (bundle != null) { String text = bundle.getString("Text1", ""); if (!text.equals("")) { tvText.setText(text); } } } }; public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { View view = inflater.inflate(R.layout.tab1, container, false); tvText = (TextView) view.findViewById(R.id.tv_tab1); editText = (EditText) view.findViewById(R.id.editText1); Button btn1 = (Button) view.findViewById(R.id.btn_change_text_1); btn1.setOnClickListener(new OnClickListener() { public void onClick(View v) { myService.sendMessage(String.valueOf(editText.getText()), 1); } }); return view; } @Override public void onAttach(Activity activity) { super.onAttach(activity); myServiceIntent = new Intent(activity, MyService.class); activity.bindService(myServiceIntent, myConnection, Context.BIND_AUTO_CREATE); } @Override public void onDetach() { super.onDetach(); getActivity().unbindService(myConnection); } } Tab2.java package com.example.tabs; import android.app.Activity; import android.app.Fragment; import android.content.ComponentName; import android.content.Context; import android.content.Intent; import android.content.ServiceConnection; import android.os.Bundle; import android.os.Handler; import android.os.IBinder; import android.os.Message; import android.util.Log; import android.view.LayoutInflater; import android.view.View; import android.view.View.OnClickListener; import android.view.ViewGroup; import android.widget.Button; import android.widget.EditText; import android.widget.TextView; public class Tab2 extends Fragment { public static String TAG = Tab2.class.getClass().getSimpleName(); private static TextView tvText; private EditText editText; private static MyService.MyBinder myBinder; private static Intent myServiceIntent; private static MyService myService; private static ServiceConnection myConnection = new ServiceConnection() { public void onServiceConnected(ComponentName name, IBinder binder) { myBinder = (MyService.MyBinder) binder; myService = myBinder.getService(); myBinder.setCallbackHandler(myServiceHandler); } public void onServiceDisconnected(ComponentName name) { myService = null; myBinder = null; } }; /** Callbackhandler. */ private static Handler myServiceHandler = new Handler() { public void handleMessage(Message message) { super.handleMessage(message); Bundle bundle = message.getData(); if (bundle != null) { String text = bundle.getString("Text1", ""); if (!text.equals("")) { tvText.setText(text); } } } }; public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { View view = inflater.inflate(R.layout.tab2, container, false); tvText = (TextView) view.findViewById(R.id.tv_tab2); editText = (EditText) view.findViewById(R.id.editText2); Button btn2 = (Button) view.findViewById(R.id.btn_change_text_2); btn2.setOnClickListener(new OnClickListener() { public void onClick(View v) { myService.sendMessage(String.valueOf(editText.getText()), 2); } }); return view; } @Override public void onAttach(Activity activity) { super.onAttach(activity); myServiceIntent = new Intent(activity, MyService.class); activity.bindService(myServiceIntent, myConnection, Context.BIND_AUTO_CREATE); } @Override public void onDetach() { super.onDetach(); getActivity().unbindService(myConnection); } } main.xml <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:id="@+id/main" android:layout_width="match_parent" android:layout_height="match_parent" android:background="@android:color/black" android:orientation="vertical" > </LinearLayout> tab1.xml <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:layout_gravity="center" android:gravity="center" android:orientation="vertical" > <EditText android:id="@+id/editText1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginBottom="10dp" android:ems="10" android:inputType="text" > <requestFocus /> </EditText> <Button android:id="@+id/btn_change_text_1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginBottom="10dp" android:text="Change text" /> <TextView android:id="@+id/tv_tab1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="TAB1\nTAB1\nTAB1" /> </LinearLayout> tab2.xml <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:layout_gravity="center" android:gravity="center" android:orientation="vertical" > <EditText android:id="@+id/editText2" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginBottom="10dp" android:ems="10" android:inputType="text" > <requestFocus /> </EditText> <Button android:id="@+id/btn_change_text_2" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginBottom="10dp" android:text="Change text" /> <TextView android:id="@+id/tv_tab2" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginBottom="10dp" android:text="TAB2\nTAB2\nTAB2" /> </LinearLayout> AndroidManifest.xml <?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.example.tabs" android:versionCode="1" android:versionName="1.0" > <uses-sdk android:minSdkVersion="15" android:targetSdkVersion="17" /> <application android:allowBackup="true" android:icon="@drawable/ic_launcher" android:label="TabsPlusService" android:theme="@android:style/Theme.Holo" > <activity android:name="com.example.tabs.MyActivity" android:configChanges="orientation|keyboardHidden|screenSize" android:label="TabsPlusService" android:theme="@android:style/Theme.Holo" > <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity> <service android:name=".MyService" android:enabled="true" > </service> </application> </manifest>

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  • JGoodies HashMap

    - by JohnMcClane
    Hi, I'm trying to build a chart program using presentation model. Using JGoodies for data binding was relatively easy for simple types like strings or numbers. But I can't figure out how to use it on a hashmap. I'll try to explain how the chart works and what my problem is: A chart consists of DataSeries, a DataSeries consists of DataPoints. I want to have a data model and to be able to use different views on the same model (e.g. bar chart, pie chart,...). Each of them consists of three classes. For example: DataPointModel: holds the data model (value, label, category) DataPointViewModel: extends JGoodies PresentationModel. wraps around DataPointModel and holds view properties like font and color. DataPoint: abstract class, extends JComponent. Different Views must subclass and implement their own ui. Binding and creating the data model was easy, but i don't know how to bind my data series model. package at.onscreen.chart; import java.beans.PropertyChangeListener; import java.beans.PropertyChangeSupport; import java.beans.PropertyVetoException; import java.util.Collection; import java.util.HashMap; import java.util.Iterator; public class DataSeriesModel { public static String PROPERTY_DATAPOINT = "dataPoint"; public static String PROPERTY_DATAPOINTS = "dataPoints"; public static String PROPERTY_LABEL = "label"; public static String PROPERTY_MAXVALUE = "maxValue"; /** * holds the data points */ private HashMap dataPoints; /** * the label for the data series */ private String label; /** * the maximum data point value */ private Double maxValue; /** * the model supports property change notification */ private PropertyChangeSupport propertyChangeSupport; /** * default constructor */ public DataSeriesModel() { this.maxValue = Double.valueOf(0); this.dataPoints = new HashMap(); this.propertyChangeSupport = new PropertyChangeSupport(this); } /** * constructor * @param label - the series label */ public DataSeriesModel(String label) { this.dataPoints = new HashMap(); this.maxValue = Double.valueOf(0); this.label = label; this.propertyChangeSupport = new PropertyChangeSupport(this); } /** * full constructor * @param label - the series label * @param dataPoints - an array of data points */ public DataSeriesModel(String label, DataPoint[] dataPoints) { this.dataPoints = new HashMap(); this.propertyChangeSupport = new PropertyChangeSupport(this); this.maxValue = Double.valueOf(0); this.label = label; for (int i = 0; i < dataPoints.length; i++) { this.addDataPoint(dataPoints[i]); } } /** * full constructor * @param label - the series label * @param dataPoints - a collection of data points */ public DataSeriesModel(String label, Collection dataPoints) { this.dataPoints = new HashMap(); this.propertyChangeSupport = new PropertyChangeSupport(this); this.maxValue = Double.valueOf(0); this.label = label; for (Iterator it = dataPoints.iterator(); it.hasNext();) { this.addDataPoint(it.next()); } } /** * adds a new data point to the series. if the series contains a data point with same id, it will be replaced by the new one. * @param dataPoint - the data point */ public void addDataPoint(DataPoint dataPoint) { String category = dataPoint.getCategory(); DataPoint oldDataPoint = this.getDataPoint(category); this.dataPoints.put(category, dataPoint); this.setMaxValue(Math.max(this.maxValue, dataPoint.getValue())); this.propertyChangeSupport.firePropertyChange(PROPERTY_DATAPOINT, oldDataPoint, dataPoint); } /** * returns the data point with given id or null if not found * @param uid - the id of the data point * @return the data point or null if there is no such point in the table */ public DataPoint getDataPoint(String category) { return this.dataPoints.get(category); } /** * removes the data point with given id from the series, if present * @param category - the data point to remove */ public void removeDataPoint(String category) { DataPoint dataPoint = this.getDataPoint(category); this.dataPoints.remove(category); if (dataPoint != null) { if (dataPoint.getValue() == this.getMaxValue()) { Double maxValue = Double.valueOf(0); for (Iterator it = this.iterator(); it.hasNext();) { DataPoint itDataPoint = it.next(); maxValue = Math.max(itDataPoint.getValue(), maxValue); } this.setMaxValue(maxValue); } } this.propertyChangeSupport.firePropertyChange(PROPERTY_DATAPOINT, dataPoint, null); } /** * removes all data points from the series * @throws PropertyVetoException */ public void removeAll() { this.setMaxValue(Double.valueOf(0)); this.dataPoints.clear(); this.propertyChangeSupport.firePropertyChange(PROPERTY_DATAPOINTS, this.getDataPoints(), null); } /** * returns the maximum of all data point values * @return the maximum of all data points */ public Double getMaxValue() { return this.maxValue; } /** * sets the max value * @param maxValue - the max value */ protected void setMaxValue(Double maxValue) { Double oldMaxValue = this.getMaxValue(); this.maxValue = maxValue; this.propertyChangeSupport.firePropertyChange(PROPERTY_MAXVALUE, oldMaxValue, maxValue); } /** * returns true if there is a data point with given category * @param category - the data point category * @return true if there is a data point with given category, otherwise false */ public boolean contains(String category) { return this.dataPoints.containsKey(category); } /** * returns the label for the series * @return the label for the series */ public String getLabel() { return this.label; } /** * returns an iterator over the data points * @return an iterator over the data points */ public Iterator iterator() { return this.dataPoints.values().iterator(); } /** * returns a collection of the data points. the collection supports removal, but does not support adding of data points. * @return a collection of data points */ public Collection getDataPoints() { return this.dataPoints.values(); } /** * returns the number of data points in the series * @return the number of data points */ public int getSize() { return this.dataPoints.size(); } /** * adds a PropertyChangeListener * @param listener - the listener */ public void addPropertyChangeListener(PropertyChangeListener listener) { this.propertyChangeSupport.addPropertyChangeListener(listener); } /** * removes a PropertyChangeListener * @param listener - the listener */ public void removePropertyChangeListener(PropertyChangeListener listener) { this.propertyChangeSupport.removePropertyChangeListener(listener); } } package at.onscreen.chart; import java.beans.PropertyVetoException; import java.util.Collection; import java.util.Iterator; import com.jgoodies.binding.PresentationModel; public class DataSeriesViewModel extends PresentationModel { /** * default constructor */ public DataSeriesViewModel() { super(new DataSeriesModel()); } /** * constructor * @param label - the series label */ public DataSeriesViewModel(String label) { super(new DataSeriesModel(label)); } /** * full constructor * @param label - the series label * @param dataPoints - an array of data points */ public DataSeriesViewModel(String label, DataPoint[] dataPoints) { super(new DataSeriesModel(label, dataPoints)); } /** * full constructor * @param label - the series label * @param dataPoints - a collection of data points */ public DataSeriesViewModel(String label, Collection dataPoints) { super(new DataSeriesModel(label, dataPoints)); } /** * full constructor * @param model - the data series model */ public DataSeriesViewModel(DataSeriesModel model) { super(model); } /** * adds a data point to the series * @param dataPoint - the data point */ public void addDataPoint(DataPoint dataPoint) { this.getBean().addDataPoint(dataPoint); } /** * returns true if there is a data point with given category * @param category - the data point category * @return true if there is a data point with given category, otherwise false */ public boolean contains(String category) { return this.getBean().contains(category); } /** * returns the data point with given id or null if not found * @param uid - the id of the data point * @return the data point or null if there is no such point in the table */ public DataPoint getDataPoint(String category) { return this.getBean().getDataPoint(category); } /** * returns a collection of the data points. the collection supports removal, but does not support adding of data points. * @return a collection of data points */ public Collection getDataPoints() { return this.getBean().getDataPoints(); } /** * returns the label for the series * @return the label for the series */ public String getLabel() { return this.getBean().getLabel(); } /** * sets the max value * @param maxValue - the max value */ public Double getMaxValue() { return this.getBean().getMaxValue(); } /** * returns the number of data points in the series * @return the number of data points */ public int getSize() { return this.getBean().getSize(); } /** * returns an iterator over the data points * @return an iterator over the data points */ public Iterator iterator() { return this.getBean().iterator(); } /** * removes all data points from the series * @throws PropertyVetoException */ public void removeAll() { this.getBean().removeAll(); } /** * removes the data point with given id from the series, if present * @param category - the data point to remove */ public void removeDataPoint(String category) { this.getBean().removeDataPoint(category); } } package at.onscreen.chart; import java.beans.PropertyChangeEvent; import java.beans.PropertyChangeListener; import java.beans.PropertyVetoException; import java.util.Collection; import java.util.Iterator; import javax.swing.JComponent; public abstract class DataSeries extends JComponent implements PropertyChangeListener { /** * the model */ private DataSeriesViewModel model; /** * default constructor */ public DataSeries() { this.model = new DataSeriesViewModel(); this.model.addPropertyChangeListener(this); this.createComponents(); } /** * constructor * @param label - the series label */ public DataSeries(String label) { this.model = new DataSeriesViewModel(label); this.model.addPropertyChangeListener(this); this.createComponents(); } /** * full constructor * @param label - the series label * @param dataPoints - an array of data points */ public DataSeries(String label, DataPoint[] dataPoints) { this.model = new DataSeriesViewModel(label, dataPoints); this.model.addPropertyChangeListener(this); this.createComponents(); } /** * full constructor * @param label - the series label * @param dataPoints - a collection of data points */ public DataSeries(String label, Collection dataPoints) { this.model = new DataSeriesViewModel(label, dataPoints); this.model.addPropertyChangeListener(this); this.createComponents(); } /** * full constructor * @param model - the model */ public DataSeries(DataSeriesViewModel model) { this.model = model; this.model.addPropertyChangeListener(this); this.createComponents(); } /** * creates, binds and configures UI components. * data point properties can be created here as components or be painted in paintComponent. */ protected abstract void createComponents(); @Override public void propertyChange(PropertyChangeEvent evt) { this.repaint(); } /** * adds a data point to the series * @param dataPoint - the data point */ public void addDataPoint(DataPoint dataPoint) { this.model.addDataPoint(dataPoint); } /** * returns true if there is a data point with given category * @param category - the data point category * @return true if there is a data point with given category, otherwise false */ public boolean contains(String category) { return this.model.contains(category); } /** * returns the data point with given id or null if not found * @param uid - the id of the data point * @return the data point or null if there is no such point in the table */ public DataPoint getDataPoint(String category) { return this.model.getDataPoint(category); } /** * returns a collection of the data points. the collection supports removal, but does not support adding of data points. * @return a collection of data points */ public Collection getDataPoints() { return this.model.getDataPoints(); } /** * returns the label for the series * @return the label for the series */ public String getLabel() { return this.model.getLabel(); } /** * sets the max value * @param maxValue - the max value */ public Double getMaxValue() { return this.model.getMaxValue(); } /** * returns the number of data points in the series * @return the number of data points */ public int getDataPointCount() { return this.model.getSize(); } /** * returns an iterator over the data points * @return an iterator over the data points */ public Iterator iterator() { return this.model.iterator(); } /** * removes all data points from the series * @throws PropertyVetoException */ public void removeAll() { this.model.removeAll(); } /** * removes the data point with given id from the series, if present * @param category - the data point to remove */ public void removeDataPoint(String category) { this.model.removeDataPoint(category); } /** * returns the data series view model * @return - the data series view model */ public DataSeriesViewModel getViewModel() { return this.model; } /** * returns the data series model * @return - the data series model */ public DataSeriesModel getModel() { return this.model.getBean(); } } package at.onscreen.chart.builder; import java.util.Collection; import net.miginfocom.swing.MigLayout; import at.onscreen.chart.DataPoint; import at.onscreen.chart.DataSeries; import at.onscreen.chart.DataSeriesViewModel; public class BuilderDataSeries extends DataSeries { /** * default constructor */ public BuilderDataSeries() { super(); } /** * constructor * @param label - the series label */ public BuilderDataSeries(String label) { super(label); } /** * full constructor * @param label - the series label * @param dataPoints - an array of data points */ public BuilderDataSeries(String label, DataPoint[] dataPoints) { super(label, dataPoints); } /** * full constructor * @param label - the series label * @param dataPoints - a collection of data points */ public BuilderDataSeries(String label, Collection dataPoints) { super(label, dataPoints); } /** * full constructor * @param model - the model */ public BuilderDataSeries(DataSeriesViewModel model) { super(model); } @Override protected void createComponents() { this.setLayout(new MigLayout()); /* * * I want to add a new BuilderDataPoint for each data point in the model. * I want the BuilderDataPoints to be synchronized with the model. * e.g. when a data point is removed from the model, the BuilderDataPoint shall be removed * from the BuilderDataSeries * */ } } package at.onscreen.chart.builder; import javax.swing.JFormattedTextField; import javax.swing.JTextField; import at.onscreen.chart.DataPoint; import at.onscreen.chart.DataPointModel; import at.onscreen.chart.DataPointViewModel; import at.onscreen.chart.ValueFormat; import com.jgoodies.binding.adapter.BasicComponentFactory; import com.jgoodies.binding.beans.BeanAdapter; public class BuilderDataPoint extends DataPoint { /** * default constructor */ public BuilderDataPoint() { super(); } /** * constructor * @param category - the category */ public BuilderDataPoint(String category) { super(category); } /** * constructor * @param value - the value * @param label - the label * @param category - the category */ public BuilderDataPoint(Double value, String label, String category) { super(value, label, category); } /** * full constructor * @param model - the model */ public BuilderDataPoint(DataPointViewModel model) { super(model); } @Override protected void createComponents() { BeanAdapter beanAdapter = new BeanAdapter(this.getModel(), true); ValueFormat format = new ValueFormat(); JFormattedTextField value = BasicComponentFactory.createFormattedTextField(beanAdapter.getValueModel(DataPointModel.PROPERTY_VALUE), format); this.add(value, "w 80, growx, wrap"); JTextField label = BasicComponentFactory.createTextField(beanAdapter.getValueModel(DataPointModel.PROPERTY_LABEL)); this.add(label, "growx, wrap"); JTextField category = BasicComponentFactory.createTextField(beanAdapter.getValueModel(DataPointModel.PROPERTY_CATEGORY)); this.add(category, "growx, wrap"); } } To sum it up: I need to know how to bind a hash map property to JComponent.components property. JGoodies is in my opinion not very well documented, I spent a long time searching through the internet, but I did not find any solution to my problem. Hope you can help me.

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  • Threads are facing deadlock in socket program [migrated]

    - by ankur.trapasiya
    I am developing one program in which a user can download a number of files. Now first I am sending the list of files to the user. So from the list user selects one file at a time and provides path where to store that file. In turn it also gives the server the path of file where does it exist. I am following this approach because I want to give stream like experience without file size limitation. Here is my code.. 1) This is server which gets started each time I start my application public class FileServer extends Thread { private ServerSocket socket = null; public FileServer() { try { socket = new ServerSocket(Utils.tcp_port); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } } @Override public void run() { try { System.out.println("request received"); new FileThread(socket.accept()).start(); } catch (IOException ex) { ex.printStackTrace(); } } } 2) This thread runs for each client separately and sends the requested file to the user 8kb data at a time. public class FileThread extends Thread { private Socket socket; private String filePath; public String getFilePath() { return filePath; } public void setFilePath(String filePath) { this.filePath = filePath; } public FileThread(Socket socket) { this.socket = socket; System.out.println("server thread" + this.socket.isConnected()); //this.filePath = filePath; } @Override public void run() { // TODO Auto-generated method stub try { ObjectInputStream ois=new ObjectInputStream(socket.getInputStream()); try { //************NOTE filePath=(String) ois.readObject(); } catch (ClassNotFoundException e) { // TODO Auto-generated catch block e.printStackTrace(); } File f = new File(this.filePath); byte[] buf = new byte[8192]; InputStream is = new FileInputStream(f); BufferedInputStream bis = new BufferedInputStream(is); ObjectOutputStream oos = new ObjectOutputStream( socket.getOutputStream()); int c = 0; while ((c = bis.read(buf, 0, buf.length)) > 0) { oos.write(buf, 0, c); oos.flush(); // buf=new byte[8192]; } oos.close(); //socket.shutdownOutput(); // client.shutdownOutput(); System.out.println("stop"); // client.shutdownOutput(); ois.close(); // Thread.sleep(500); is.close(); bis.close(); socket.close(); } catch (IOException ex) { ex.printStackTrace(); } } } NOTE: here filePath represents the path of the file where it exists on the server. The client who is connecting to the server provides this path. I am managing this through sockets and I am successfully receiving this path. 3) FileReceiverThread is responsible for receiving the data from the server and constructing file from this buffer data. public class FileReceiveThread extends Thread { private String fileStorePath; private String sourceFile; private Socket socket = null; public FileReceiveThread(String ip, int port, String fileStorePath, String sourceFile) { this.fileStorePath = fileStorePath; this.sourceFile = sourceFile; try { socket = new Socket(ip, port); System.out.println("receive file thread " + socket.isConnected()); } catch (IOException ex) { ex.printStackTrace(); } } @Override public void run() { try { ObjectOutputStream oos = new ObjectOutputStream( socket.getOutputStream()); oos.writeObject(sourceFile); oos.flush(); // oos.close(); File f = new File(fileStorePath); OutputStream os = new FileOutputStream(f); BufferedOutputStream bos = new BufferedOutputStream(os); byte[] buf = new byte[8192]; int c = 0; //************ NOTE ObjectInputStream ois = new ObjectInputStream( socket.getInputStream()); while ((c = ois.read(buf, 0, buf.length)) > 0) { // ois.read(buf); bos.write(buf, 0, c); bos.flush(); // buf = new byte[8192]; } ois.close(); oos.close(); // os.close(); bos.close(); socket.close(); //Thread.sleep(500); } catch (IOException ex) { ex.printStackTrace(); } } } NOTE : Now the problem that I am facing is at the first time when the file is requested the outcome of the program is same as my expectation. I am able to transmit any size of file at first time. Now when the second file is requested (e.g. I have sent file a,b,c,d to the user and user has received file a successfully and now he is requesting file b) the program faces deadlock at this situation. It is waiting for socket's input stream. I put breakpoint and tried to debug it but it is not going in FileThread's run method second time. I could not find out the mistake here. Basically I am making a LAN Messenger which works on LAN. I am using SWT as UI framework.

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  • Clean way to use mutable implementation of Immutable interfaces for encapsulation

    - by dsollen
    My code is working on some compost relationship which creates a tree structure, class A has many children of type B, which has many children of type C etc. The lowest level class, call it bar, also points to a connected bar class. This effectively makes nearly every object in my domain inter-connected. Immutable objects would be problematic due to the expense of rebuilding almost all of my domain to make a single change to one class. I chose to go with an interface approach. Every object has an Immutable interface which only publishes the getter methods. I have controller objects which constructs the domain objects and thus has reference to the full objects, thus capable of calling the setter methods; but only ever publishes the immutable interface. Any change requested will go through the controller. So something like this: public interface ImmutableFoo{ public Bar getBar(); public Location getLocation(); } public class Foo implements ImmutableFoo{ private Bar bar; private Location location; @Override public Bar getBar(){ return Bar; } public void setBar(Bar bar){ this.bar=bar; } @Override public Location getLocation(){ return Location; } } public class Controller{ Private Map<Location, Foo> fooMap; public ImmutableFoo addBar(Bar bar){ Foo foo=fooMap.get(bar.getLocation()); if(foo!=null) foo.addBar(bar); return foo; } } I felt the basic approach seems sensible, however, when I speak to others they always seem to have trouble envisioning what I'm describing, which leaves me concerned that I may have a larger design issue then I'm aware of. Is it problematic to have domain objects so tightly coupled, or to use the quasi-mutable approach to modifying them? Assuming that the design approach itself isn't inherently flawed the particular discussion which left me wondering about my approach had to do with the presence of business logic in the domain objects. Currently I have my setter methods in the mutable objects do error checking and all other logic required to verify and make a change to the object. It was suggested that this should be pulled out into a service class, which applies all the business logic, to simplify my domain objects. I understand the advantage in mocking/testing and general separation of logic into two classes. However, with a service method/object It seems I loose some of the advantage of polymorphism, I can't override a base class to add in new error checking or business logic. It seems, if my polymorphic classes were complicated enough, I would end up with a service method that has to check a dozen flags to decide what error checking and business logic applies. So, for example, if I wanted to have a childFoo which also had a size field which should be compared to bar before adding par my current approach would look something like this. public class Foo implements ImmutableFoo{ public void addBar(Bar bar){ if(!getLocation().equals(bar.getLocation()) throw new LocationException(); this.bar=bar; } } public interface ImmutableChildFoo extends ImmutableFoo{ public int getSize(); } public ChildFoo extends Foo implements ImmutableChildFoo{ private int size; @Override public int getSize(){ return size; } @Override public void addBar(Bar bar){ if(getSize()<bar.getSize()){ throw new LocationException(); super.addBar(bar); } My colleague was suggesting instead having a service object that looks something like this (over simplified, the 'service' object would likely be more complex). public interface ImmutableFoo{ ///original interface, presumably used in other methods public Location getLocation(); public boolean isChildFoo(); } public interface ImmutableSizedFoo implements ImmutableFoo{ public int getSize(); } public class Foo implements ImmutableSizedFoo{ public Bar bar; @Override public void addBar(Bar bar){ this.bar=bar; } @Override public int getSize(){ //default size if no size is known return 0; } @Override public boolean isChildFoo return false; } } public ChildFoo extends Foo{ private int size; @Override public int getSize(){ return size; } @Override public boolean isChildFoo(); return true; } } public class Controller{ Private Map<Location, Foo> fooMap; public ImmutableSizedFoo addBar(Bar bar){ Foo foo=fooMap.get(bar.getLocation()); service.addBarToFoo(foo, bar); returned foo; } public class Service{ public static void addBarToFoo(Foo foo, Bar bar){ if(foo==null) return; if(!foo.getLocation().equals(bar.getLocation())) throw new LocationException(); if(foo.isChildFoo() && foo.getSize()<bar.getSize()) throw new LocationException(); foo.setBar(bar); } } } Is the recommended approach of using services and inversion of control inherently superior, or superior in certain cases, to overriding methods directly? If so is there a good way to go with the service approach while not loosing the power of polymorphism to override some of the behavior?

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  • Trying to implement fling events on an object

    - by Adam Short
    I have a game object, well a bitmap, which I'd like to "fling". I'm struggling to get it to fling ontouchlistener due to it being a bitmap and not sure how to proceed and I'm struggling to find the resources to help. Here's my code so far: https://github.com/addrum/Shapes GameActivity class: package com.main.shapes; import android.app.Activity; import android.content.Context; import android.graphics.Bitmap; import android.graphics.BitmapFactory; import android.graphics.Canvas; import android.os.Bundle; import android.view.GestureDetector; import android.view.MotionEvent; import android.view.SurfaceHolder; import android.view.SurfaceView; import android.view.View.OnTouchListener; import android.view.Window; public class GameActivity extends Activity { private GestureDetector gestureDetector; View view; Bitmap ball; float x, y; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); //Remove title bar this.requestWindowFeature(Window.FEATURE_NO_TITLE); view = new View(this); ball = BitmapFactory.decodeResource(getResources(), R.drawable.ball); gestureDetector = new GestureDetector(this, new GestureListener()); x = 0; y = 0; setContentView(view); ball.setOnTouchListener(new OnTouchListener() { @Override public boolean onTouch(android.view.View v, MotionEvent event) { // TODO Auto-generated method stub return false; } }); } @Override protected void onPause() { super.onPause(); view.pause(); } @Override protected void onResume() { super.onResume(); view.resume(); } public class View extends SurfaceView implements Runnable { Thread thread = null; SurfaceHolder holder; boolean canRun = false; public View(Context context) { super(context); holder = getHolder(); } public void run() { while (canRun) { if (!holder.getSurface().isValid()) { continue; } Canvas c = holder.lockCanvas(); c.drawARGB(255, 255, 255, 255); c.drawBitmap(ball, x - (ball.getWidth() / 2), y - (ball.getHeight() / 2), null); holder.unlockCanvasAndPost(c); } } public void pause() { canRun = false; while (true) { try { thread.join(); } catch (InterruptedException e) { e.printStackTrace(); } break; } thread = null; } public void resume() { canRun = true; thread = new Thread(this); thread.start(); } } } GestureListener class: package com.main.shapes; import android.view.GestureDetector.SimpleOnGestureListener; import android.view.MotionEvent; public class GestureListener extends SimpleOnGestureListener { private static final int SWIPE_MIN_DISTANCE = 120; private static final int SWIPE_THRESHOLD_VELOCITY = 200; @Override public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) { if (e1.getX() - e2.getX() > SWIPE_MIN_DISTANCE && Math.abs(velocityX) > SWIPE_THRESHOLD_VELOCITY) { //From Right to Left return true; } else if (e2.getX() - e1.getX() > SWIPE_MIN_DISTANCE && Math.abs(velocityX) > SWIPE_THRESHOLD_VELOCITY) { //From Left to Right return true; } if (e1.getY() - e2.getY() > SWIPE_MIN_DISTANCE && Math.abs(velocityY) > SWIPE_THRESHOLD_VELOCITY) { //From Bottom to Top return true; } else if (e2.getY() - e1.getY() > SWIPE_MIN_DISTANCE && Math.abs(velocityY) > SWIPE_THRESHOLD_VELOCITY) { //From Top to Bottom return true; } return false; } @Override public boolean onDown(MotionEvent e) { //always return true since all gestures always begin with onDown and<br> //if this returns false, the framework won't try to pick up onFling for example. return true; } }

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  • Viewing the NetBeans Central Registry (Part 2)

    - by Geertjan
    Jens Hofschröer, who has one of the very best NetBeans Platform blogs (if you more or less understand German), and who wrote, sometime ago, the initial version of the Import Statement Organizer, as well as being the main developer of a great gear design & manufacturing tool on the NetBeans Platform in Aachen, commented on my recent blog entry "Viewing the NetBeans Central Registry", where the root Node of the Central Registry is shown in a BeanTreeView, with the words: "I wrapped that Node in a FilterNode to provide the 'position' attribute and the 'file extension'. All Children are wrapped too. Then I used an OutlineView to show these two properties. Great tool to find wrong layer entries." I asked him for the code he describes above and he sent it to me. He discussed it here in his blog, while all the code involved can be read below. The result is as follows, where you can see that the OutlineView shows information that my simple implementation (via a BeanTreeView) kept hidden: And so here is the definition of the Node. class LayerPropertiesNode extends FilterNode { public LayerPropertiesNode(Node node) { super(node, isFolder(node) ? Children.create(new LayerPropertiesFactory(node), true) : Children.LEAF); } private static boolean isFolder(Node node) { return null != node.getLookup().lookup(DataFolder.class); } @Override public String getDisplayName() { return getLookup().lookup(FileObject.class).getName(); } @Override public Image getIcon(int type) { FileObject fo = getLookup().lookup(FileObject.class); try { DataObject data = DataObject.find(fo); return data.getNodeDelegate().getIcon(type); } catch (DataObjectNotFoundException ex) { Exceptions.printStackTrace(ex); } return super.getIcon(type); } @Override public Image getOpenedIcon(int type) { return getIcon(type); } @Override public PropertySet[] getPropertySets() { Set set = Sheet.createPropertiesSet(); set.put(new PropertySupport.ReadOnly<Integer>( "position", Integer.class, "Position", null) { @Override public Integer getValue() throws IllegalAccessException, InvocationTargetException { FileObject fileEntry = getLookup().lookup(FileObject.class); Integer posValue = (Integer) fileEntry.getAttribute("position"); return posValue != null ? posValue : Integer.valueOf(0); } }); set.put(new PropertySupport.ReadOnly<String>( "ext", String.class, "Extension", null) { @Override public String getValue() throws IllegalAccessException, InvocationTargetException { FileObject fileEntry = getLookup().lookup(FileObject.class); return fileEntry.getExt(); } }); PropertySet[] original = super.getPropertySets(); PropertySet[] withLayer = new PropertySet[original.length + 1]; System.arraycopy(original, 0, withLayer, 0, original.length); withLayer[withLayer.length - 1] = set; return withLayer; } private static class LayerPropertiesFactory extends ChildFactory<FileObject> { private final Node context; public LayerPropertiesFactory(Node context) { this.context = context; } @Override protected boolean createKeys(List<FileObject> list) { FileObject folder = context.getLookup().lookup(FileObject.class); FileObject[] children = folder.getChildren(); List<FileObject> ordered = FileUtil.getOrder(Arrays.asList(children), false); list.addAll(ordered); return true; } @Override protected Node createNodeForKey(FileObject key) { AbstractNode node = new AbstractNode(org.openide.nodes.Children.LEAF, key.isFolder() ? Lookups.fixed(key, DataFolder.findFolder(key)) : Lookups.singleton(key)); return new LayerPropertiesNode(node); } } } Then here is the definition of the Action, which pops up a JPanel, displaying an OutlineView: @ActionID(category = "Tools", id = "de.nigjo.nb.layerview.LayerViewAction") @ActionRegistration(displayName = "#CTL_LayerViewAction") @ActionReferences({ @ActionReference(path = "Menu/Tools", position = 1450, separatorBefore = 1425) }) @Messages("CTL_LayerViewAction=Display XML Layer") public final class LayerViewAction implements ActionListener { @Override public void actionPerformed(ActionEvent e) { try { Node node = DataObject.find(FileUtil.getConfigRoot()).getNodeDelegate(); node = new LayerPropertiesNode(node); node = new FilterNode(node) { @Override public Component getCustomizer() { LayerView view = new LayerView(); view.getExplorerManager().setRootContext(this); return view; } @Override public boolean hasCustomizer() { return true; } }; NodeOperation.getDefault().customize(node); } catch (DataObjectNotFoundException ex) { Exceptions.printStackTrace(ex); } } private static class LayerView extends JPanel implements ExplorerManager.Provider { private final ExplorerManager em; public LayerView() { super(new BorderLayout()); em = new ExplorerManager(); OutlineView view = new OutlineView("entry"); view.addPropertyColumn("position", "Position"); view.addPropertyColumn("ext", "Extension"); add(view); } @Override public ExplorerManager getExplorerManager() { return em; } } }

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  • Synchronized Property Changes (Part 4)

    - by Geertjan
    The next step is to activate the undo/redo functionality... for a Node. Something I've not seen done before. I.e., when the Node is renamed via F2 on the Node, the "Undo/Redo" buttons should start working. Here is the start of the solution, via this item in the mailing list and Timon Veenstra's BeanNode class, note especially the items in bold: public class ShipNode extends BeanNode implements PropertyChangeListener, UndoRedo.Provider { private final InstanceContent ic; private final ShipSaveCapability saveCookie; private UndoRedo.Manager manager; private String oldDisplayName; private String newDisplayName; private Ship ship; public ShipNode(Ship bean) throws IntrospectionException { this(bean, new InstanceContent()); } private ShipNode(Ship bean, InstanceContent ic) throws IntrospectionException { super(bean, Children.LEAF, new ProxyLookup(new AbstractLookup(ic), Lookups.singleton(bean))); this.ic = ic; setDisplayName(bean.getType()); setShortDescription(String.valueOf(bean.getYear())); saveCookie = new ShipSaveCapability(bean); bean.addPropertyChangeListener(WeakListeners.propertyChange(this, bean)); } @Override public Action[] getActions(boolean context) { List<? extends Action> shipActions = Utilities.actionsForPath("Actions/Ship"); return shipActions.toArray(new Action[shipActions.size()]); } protected void fire(boolean modified) { if (modified) { ic.add(saveCookie); } else { ic.remove(saveCookie); } } @Override public UndoRedo getUndoRedo() { manager = Lookup.getDefault().lookup( UndoRedo.Manager.class); return manager; } private class ShipSaveCapability implements SaveCookie { private final Ship bean; public ShipSaveCapability(Ship bean) { this.bean = bean; } @Override public void save() throws IOException { StatusDisplayer.getDefault().setStatusText("Saving..."); fire(false); } } @Override public boolean canRename() { return true; } @Override public void setName(String newDisplayName) { Ship c = getLookup().lookup(Ship.class); oldDisplayName = c.getType(); c.setType(newDisplayName); fireNameChange(oldDisplayName, newDisplayName); fire(true); fireUndoableEvent("type", ship, oldDisplayName, newDisplayName); } public void fireUndoableEvent(String property, Ship source, Object oldValue, Object newValue) { ReUndoableEdit reUndoableEdit = new ReUndoableEdit( property, source, oldValue, newValue); UndoableEditEvent undoableEditEvent = new UndoableEditEvent( this, reUndoableEdit); manager.undoableEditHappened(undoableEditEvent); } private class ReUndoableEdit extends AbstractUndoableEdit { private Object oldValue; private Object newValue; private Ship source; private String property; public ReUndoableEdit(String property, Ship source, Object oldValue, Object newValue) { super(); this.oldValue = oldValue; this.newValue = newValue; this.source = source; this.property = property; } @Override public void undo() throws CannotUndoException { setName(oldValue.toString()); } @Override public void redo() throws CannotRedoException { setName(newValue.toString()); } } @Override public String getDisplayName() { Ship c = getLookup().lookup(Ship.class); if (null != c.getType()) { return c.getType(); } return super.getDisplayName(); } @Override public String getShortDescription() { Ship c = getLookup().lookup(Ship.class); if (null != String.valueOf(c.getYear())) { return String.valueOf(c.getYear()); } return super.getShortDescription(); } @Override public void propertyChange(PropertyChangeEvent evt) { if (evt.getPropertyName().equals("type")) { String oldDisplayName = evt.getOldValue().toString(); String newDisplayName = evt.getNewValue().toString(); fireDisplayNameChange(oldDisplayName, newDisplayName); } else if (evt.getPropertyName().equals("year")) { String oldToolTip = evt.getOldValue().toString(); String newToolTip = evt.getNewValue().toString(); fireShortDescriptionChange(oldToolTip, newToolTip); } fire(true); } } Undo works when rename is done, but Redo never does, because Undo is constantly activated, since it is reactivated whenever there is a name change. And why must the UndoRedoManager be retrieved from the Lookup (it doesn't work otherwise)? Don't get that part of the code either. Help welcome!

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  • Single Table Per Class Hierarchy with an abstract superclass using Hibernate Annotations

    - by Andy Hull
    I have a simple class hierarchy, similar to the following: @Entity @Table(name="animal") @Inheritance(strategy=InheritanceType.SINGLE_TABLE) @DiscriminatorColumn(name="animal_type", discriminatorType=DiscriminatorType.STRING) public abstract class Animal { } @Entity @DiscriminatorValue("cat") public class Cat extends Animal { } @Entity @DiscriminatorValue("dog") public class Dog extends Animal { } When I query "from Animal" I get this exception: "org.hibernate.InstantiationException: Cannot instantiate abstract class or interface: Animal" If I make Animal concrete, and add a dummy discriminator... such as @DiscriminatorValue("animal")... my query returns my cats and dogs as instances of Animals. I remember this being trivial with HBM based mappings but I think I'm missing something when using annotations. Can anyone help? Thanks!

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  • How to attach a scroll bar to a canvas in android ?

    - by panzerschreck
    Hello, I am drawing up a grid on a canvas as below, I have not been able to get the scroll bar to appear, I looked around for examples, but none of them give details on drawing scroll bars for custom views. Your help is much appreciated. public class GridActivity extends Activity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); // i tried to do as in the documentation nothing seems to happen LinearLayout lLayout = new LinearLayout(this); lLayout.addView(new CustomDrawableView(this), new ViewGroup.LayoutParams(800,600)); FrameLayout fLayout = new FrameLayout(this); fLayout.addView(lLayout, new ViewGroup.LayoutParams(800,600)); setContentView(fLayout); } private class GridView extends ScrollView { private ShapeDrawable[] mDrawable; public GridView (Context context) { // some initialization } protected void onDraw(Canvas canvas) { for each i mDrawable[i].draw(canvas) } } }

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  • Syntax error on token "QUOTE", VariableDeclaratorId expected after this token

    - by user356812
    I've posted a bigger chunk of the code below. You can see that initially QUOTE was procedural- coded in place. I'm trying to learn how to use declarative design so I want to do the same thing but by using resources. It seems like I need to access the string.xml thru the @R.id tag and identify QUOTE with that string value. But I don't know enough to negotiate this. Any tips? Thanks! public class circle extends Activity { @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(new GraphicsView(this)); } static public class GraphicsView extends View { //private static final String QUOTE = "Happy Birthday to David."; private final String QUOTE = getString(R.string.quote); ..... @Override protected void onDraw(Canvas canvas) { // Drawing commands go here canvas.drawPath(circle, cPaint); canvas.drawTextOnPath(QUOTE, circle, 0, 20, tPaint);

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  • [android] Activity group throw ActivityNotFoundException?

    - by Mak Sing
    Hi, I want to change the current activity inside a tab in a tab activity, after some research, I know that I need to use activity group to go this. then I created a new class extends ActivityGroup with the code below: public class FavShop extends ActivityGroup{ protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); LocalActivityManager m = getLocalActivityManager(); Intent i = new Intent(this, fav_shops.class); Window window = m.startActivity("favourite shop",i); setContentView(window.getDecorView()); } } then I run the program, the program throw the ActivityNotFoundException when the intent for the tab is launched I have no idea how to solve this problem, could anyone help me?

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  • GWT: use the same UI template for multiple pages?

    - by janya
    Hello, how can I use the same UI template (*.ui.xml file) with multiple Java objects extending from Composite? I need to build several pages that should display basically the same information with the same layout, but on one page some fields will be editable, and on a different page other fields will be editable. I would like to specify layout only once in ui.xml, and create different behaviors in different *.java classes. Eclipse is giving me a syntax error "FirstAppUI.ui.xml is missing" on @UiTemplate("Template.ui.xml") public class FirstAppUI extends Composite { interface FirstAppUIUiBinder extends UiBinder<Widget, FirstAppUI> { } } thanks! jane prusakova

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  • Kohana 3: Auth module

    - by Thomas
    Hi, i'm trying to learn the Kohana's Auth module but login method always return false. Controller: <?php defined('SYSPATH') OR die('No Direct Script Access'); class Controller_Auth extends Controller { public function action_index() { if($_POST) { $this->login(); } $this->template = View::factory('login'); echo $this->template; } private function login() { $user = ORM::factory('user'); $data = array('username' => 'wilson', 'password' => '123'); if(!$user->login($data)) { echo 'FAILED!'; } } private function logout() { } } ?> Model: <?php defined('SYSPATH') or die('No direct script access.'); class Model_User extends Model_Auth_User { } ?>

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  • Using TCPDF and FPDI with cake php

    - by kwhohasamullet
    Hi Guys, I have go TCPDF setup in my cake php install and am now trying to also use FPDI with it as i need to add a PDF to the start of the PDF that is being generated. WHen trying to do this i am using 3 classes XTCPDF which holds my header data FPDI - FPDI class TCPDF - TCPDF class and it is setup as so: XTCPDF extends FPDI FPDI extends TCPDF When i try and generate a PDF with this using commands from teh FPDI classs i get the following error: Fatal error: Cannot access protected property XTCPDF::$PDFVersion in C:\Program Files\XAMPP\xampp\htdocs\quote\app\vendors\fpdi\fpdi_pdf_parser.php on line 388 Im thinking this may be a scope problem but im not too sure, i have also tested by changing it around to not include XTCPDF class but the same error occurs, EDIT: The code that i am using that accesses the FPDI class is: $tcpdf->setSourceFile(APP.'webroot'.DS.'img'.DS.'pdf'.DS.'front_cover.pdf'); $frontCover = $tcpdf->importPage(1); $tcpdf->useTemplate($frontCover); Thanks in advance for any help :D

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  • Accessing UI context from asynch task

    - by cdonner
    I came across this android example that runs an AsyncTask from a UI thread. The class ExportDatabaseTask is declared and instantiated in the Activity, and apparently it is possible to reference the activity's UI context from the onPreExecute and onPostExecute events, like this: public class ManageData extends Activity { private ExportDatabaseTask exportDatabaseTask; [...] @Override public void onCreate(final Bundle savedInstanceState) { [...] ManageData.this.exportDatabaseTask = new ExportDatabaseTask(); ManageData.this.exportDatabaseTask.execute(); [...] } private class ExportDatabaseTask extends AsyncTask<String, Void, Boolean> { private final ProgressDialog dialog = new ProgressDialog(ManageData.this); protected void onPreExecute() { this.dialog.setMessage("Exporting database..."); this.dialog.show(); } protected Boolean doInBackground(final String... args) { [...] } protected void onPostExecute(final Boolean success) { if (this.dialog.isShowing()) { this.dialog.dismiss(); } } } I am trying to refactor this so that the ExportDatabaseTask is declared in another class that is not the Activity, for various reasons, and I can't quite figure out how to make it work. I am lacking some basic Java concepts here, which I readily admit. Specifically, myActivity is null in onPreExecute(). Why is that? public void onClick(View v) { Exporter ex = new Exporter(getApplicationContext(), ActivityMain.this); ex.exportDatabaseTask.execute(); } public class Exporter { public ExportDatabaseTask exportDatabaseTask; public Exporter(Context ctx, ActivityMain act) { myContext = ctx; myActivity = act; this.exportDatabaseTask = new ExportDatabaseTask(); } public class ExportDatabaseTask extends AsyncTask<Void, Void, Boolean> { private final ProgressDialog dialog = new ProgressDialog(myContext); // can use UI thread here? protected void onPreExecute() { // ====> this throws a Nullpointer exception: myActivity.dialog.setMessage("Exporting database..."); myActivity.dialog.show(); } protected Boolean doInBackground(final Void... args) { } protected void onPostExecute(final Boolean success) { if (myActivity.dialog.isShowing()) { myActivity.dialog.dismiss(); } } } }

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  • PHP and Classes: access to parent's public property within the parent class

    - by takpar
    Hi, here is what my code looks like i have two forms: class Form_1 extends Form_Abstract { public $iId = 1; } class Form_2 extends Form_1 { public $iId = 2; } i expect the code behave like this: $oForm = new Form_2; echo $oForm->getId(); // it returns '2' echo $oForm->getParentId(); // i expect it returns '1' here is my Form_Abstract class: class Form_Abstract { public $iId = 0; public function getId() { return $this->iId; } /** this method will be called from a child instance */ public function getParentId() { return parent::$iId; } } but it throws a Fatal Error: Fatal error: Cannot access parent:: when current class scope has no parent please help me with the method getParentId()

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  • Get from Android BroadcastReciever to a UI

    - by Andy
    I have a reciever that works well, but I can't seem to show a proper UI, although the toast appears correctly. As far as I can tell, this is caused by Android requiring the class to extend Activity, however, the class already extends BroadcastReciever, so I can't do this. So, I tried to do an Intent, but this failed too. There are no errors, but the screen doesn't show. Source code is below, and any help would be most appreciated. Reciever public class Reciever extends BroadcastReceiver { @Override public void onReceive(Context context, Intent intent) { Toast.makeText(context, "Alarm Recieved", Toast.LENGTH_LONG).show(); Intent i = new Intent(); i.setClass(context, AlarmRing.class); } } AlarmRing public class AlarmRing extends Activity { /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.alarm); MediaPlayer mp = MediaPlayer.create(getBaseContext(), R.raw.sweetchild); mp.start(); } Manifest <?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.comaad.andyroidalarm" android:versionCode="1" android:versionName="1.0"> <application android:icon="@drawable/icon" android:label="@string/app_name"> <activity android:name=".AndyRoidAlarm" android:label="@string/app_name"> <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity> <receiver android:name="com.comaad.andyroidalarm.Reciever" android:enabled="true"> <intent-filter> <action android:name="com.comaad.andyroidalarm.Reciever"></action> </intent-filter> </receiver> <activity android:name=".AlarmRing"></activity> </application> </manifest> }

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  • Task queue java

    - by user268515
    Hi i'm new to Task queue java API i tried a simple Example for it. My idea is to redirect the queue file to a servlet and to print some statement in the servlet.But it doesn't work. i mapped web.xml and used default queue I didnt get any Error but the file is not redirected to servlet . this is the codee i followed taskq.java public class taskq extends HttpServlet { public void doGet(HttpServletRequest req, HttpServletResponse resp)throwsIOException { Queue queue = QueueFactory.getDefaultQueue(); System.out.println("taskqueue"); queue.add(url("/worker")); } worker.java public class worker extends HttpServlet { private static final long serialVersionUID = 1L; public String s; public void doGet(HttpServletRequest req, HttpServletResponse resp)throws IOException { String s="crimsom"; System.out.println(s); } } Please Help me on this issue. Regards Sharun.

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  • Android: SlidingDrawer disappears under SurfaceView

    - by ykrasik
    Hi, I'm trying to create a SlidingDrawer with LinearLayout content over a FrameLayout. At first it all seems fine, I get my SlidingDrawer's handle at the bottom of the screen. But then, if I start dragging the handle up and the content starts showing, it gets clipped by the border rectangle of the handle. If I drag the handle all the way up the entire content eventually gets shown, however if I now drag the handle down, it will be clipped by the border rectangle of the content. Also, if the handle is all the way up, as soon as I start dragging it the whole content disappears. I can still click on where the handle should be on the screen, drag it and the content would show, but I need to guess where the handle is. What seems to be causing this is the fact that I have a SurfaceView in the xml file just before SlidingDrawer. Removing the view from the xml solves this problem, however I need this view. Here's the xml: <FrameLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent"> <!-- Removing this DrawView from here solves the problem --> <com.package.DrawView android:id="@+id/main" android:layout_width="fill_parent" android:layout_height="fill_parent" /> <SlidingDrawer android:id="@+id/SlidingDrawer" android:layout_width="wrap_content" android:layout_height="wrap_content" android:allowSingleTap="true" android:animateOnClick="true" android:handle="@+id/slideHandleButton" android:content="@+id/contentLayout" android:padding="10dip"> <Button android:id="@+id/slideHandleButton" android:layout_width="fill_parent" android:layout_height="wrap_content" android:background="@drawable/sliding_button"> </Button> <LinearLayout android:id="@+id/contentLayout" android:layout_width="wrap_content" android:layout_height="wrap_content" android:orientation="vertical"> <Button android:id="@+id/clearButton" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Test"> </Button> </LinearLayout> </SlidingDrawer> </FrameLayout> Java: package com.package; import android.app.Activity; import android.os.Bundle; public class SlideTest extends Activity { /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); } } package com.package; import android.content.Context; import android.util.AttributeSet; import android.view.SurfaceView; public class DrawView extends SurfaceView { public DrawView(Context context, AttributeSet attrs) { super(context, attrs); } } Edit: I just noticed that if DrawView extends View and not SurfaceView this problem goes away. However, I'm using a dedicated drawing thread and according to the documentation (and LunarLander example) when using a dedicated drawing thread, it should draw to a SurfaceView. Any help would be greatly appreciated!

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  • Runtime error of TASM language help!

    - by dominoos
    .model small .stack 400h .data message db "hello. ", 0ah, 0dh, "$" firstdigit db ? seconddigit db ? thirddigit db ? number dw ? newnumber db ? anumber dw 0d bnumber dw 0d Firstn db 0ah, 0dh, "Enter first 3 digit number: ","$" secondn db 0ah, 0dh, "Enter second 3 digit number: ","$" messageB db 0ah, 0dh, "HCF of two number is: ","$" linebreaker db 0ah, 0dh, ' ', 0ah, 0dh, '$' .code Start: mov ax, @data ; establish access to the data segment mov ds, ax ; mov number, 0d mov dx, offset message ; print the string "yob choi 0648293" mov ah, 9h int 21h num: mov dx, offset Firstn ; print the string "put 1st 3 digit" mov ah, 9h int 21h ;run JMP FirstFirst ; jump to FirstFirst FirstFirst: ;first digit mov ah, 1d ;bios code for read a keystroke int 21h ;call bios, it is understood that the ascii code will be returned in al mov firstdigit, al ;may as well save a copy sub al, 30h ;Convert code to an actual integer cbw ;CONVERT BYTE TO WORD. This takes whatever number is in al and ;extends it to ax, doubling its size from 8 bits to 16 bits ;The first digit now occupies all of ax as an integer mov cx, 100d ;This is so we can calculate 100*1st digit +10*2nd digit + 3rd digit mul cx ;start to accumulate the 3 digit number in the variable imul cx ;it is understood that the other operand is ax ; the result will use both dx::ax ;dx will contain only leading zeros add anumber, ax ;save ;Second Digit mov ah, 1d ;bios code for read a keystroke int 21h ;call bios, it is understood that the ascii code will be returned in al mov seconddigit, al ;may as well save a copy sub al, 30h ;Convert code to an actual integer cbw ;CONVERT BYTE TO WORD. This takes whatever number is in al and ;extends it to ax, boubling its size from 8 bits to 16 bits ;The first digit now occupies all of ax as an integer mov cx, 10d ;continue to accumulate the 3 digit number in the variable mul cx ;it is understood that the other operand is ax, containing first digit ;the result will use both dx::ax ;dx will contain only leading zeros. add anumber, ax ;save ;third Digit mov ah, 1d ;samething as above int 21h ; mov thirddigit, al ; sub al, 30h ; cbw ; add anumber, ax ; jmp num2 ;go to checks Num2: mov dx, offset secondn ; print the string "put 2nd 3 digits" mov ah, 9h int 21h ;run JMP SecondSecond SecondSecond: ;first digit mov ah, 1d ;bios code for read a keystroke int 21h ;call bios, it is understood that the ascii code will be returned in al mov firstdigit, al ;may as well save a copy sub al, 30h ;Convert code to an actual integer cbw ;CONVERT BYTE TO WORD. This takes whatever number is in al and ;extends it to ax, doubling its size from 8 bits to 16 bits ;The first digit now occupies all of ax as an integer mov cx, 100d ;This is so we can calculate 100*1st digit +10*2nd digit + 3rd digit mul cx ;start to accumulate the 3 digit number in the variable imul cx ;it is understood that the other operand is ax ; the result will use both dx::ax ;dx will contain only leading zeros add bnumber, ax ;save ;Second Digit mov ah, 1d ;bios code for read a keystroke int 21h ;call bios, it is understood that the ascii code will be returned in al mov seconddigit, al ;may as well save a copy sub al, 30h ;Convert code to an actual integer cbw ;CONVERT BYTE TO WORD. This takes whatever number is in al and ;extends it to ax, boubling its size from 8 bits to 16 bits ;The first digit now occupies all of ax as an integer mov cx, 10d ;continue to accumulate the 3 digit number in the variable mul cx ;it is understood that the other operand is ax, containing first digit ;the result will use both dx::ax ;dx will contain only leading zeros. add bnumber, ax ;save ;third Digit mov ah, 1d ;samething as above int 21h ; mov thirddigit, al ; sub al, 30h ; cbw ; add bnumber, ax ; jmp compare ;go to compare compare: CMP ax, anumber ;comparing numbB and Number JA comp1 ;go to comp1 if anumber is bigger CMP ax, anumber ; JB comp2 ;go to comp2 if anumber is smaller CMP ax, anumber ; JE equal ;go to equal if two numbers are the same JMP compare ;go to compare (avioding error) comp1: SUB ax, anumber; subtract smaller number from bigger number JMP compare ; comp2: SUB anumber, ax; subtract smaller number from bigger number JMP compare ; equal: mov ah, 9d ;make linkbreak after the 2nd 3 digit number mov dx, offset linebreaker int 21h mov ah, 9d ;print "HCF of two number is:" mov dx, offset messageB int 21h mov ax,anumber ;copying 2nd number into ax add al,30h ; converting to ascii mov newnumber,al ; copying from low part of register into newnumb mov ah, 2d ;bios code for print a character mov dl, newnumber ;we had saved the ascii code here int 21h ;call to bios JMP exit; exit: mov ah, 4ch int 21h ;exit the program End hi, this is a program that finds highest common factor of 2 different 3digit number. if i put 200, 235,312 (low numbers) it works fine. but if i put 500, 550, 654(bigger number) the program crashes after the 2nd 3digit number is entered. can you help me to find out what problem is?

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  • getView() (for a Custom ListView ) doesn't get called on notifyDatasetChanged()

    - by hungson175
    Hi everyone, I have the following problem, and searched for a while but haven't got any solution from the net: I have a custom list view, each item has the following layout (I just post the essential): <LinearLayout> <ImageView android:id="@+id/friendlist_iv_avatar" /> <TextView andorid:id="@+id/friendlist_tv_nick_name" /> <ImageView android:id="@+id/friendlist_iv_status_icon" /> </LinearLayout> And I have a class FriendRowItem, which is inflated from the above layout: public class FriendRowItem extends LinearLayout{ private ImageView ivAvatar; private ImageView ivStatusIcon; private TextView tvNickName; public FriendRowItem(Context context) { super(context); RelativeLayout friendRow = (RelativeLayout) Helpers.inflate(context, R.layout.friendlist_row); this.addView(friendRow); ivAvatar = (ImageView)findViewById(R.id.friendlist_iv_avatar); ivStatusIcon = (ImageView)findViewById(R.id.friendlist_iv_status_icon); tvNickName = (TextView)findViewById(R.id.friendlist_tv_nick_name); } public void setPropeties(Friend friend) { //Avatar ivAvatar.setImageResource(friend.getAvatar().getDrawableResourceId()); //Status Status.Type status = friend.getStatusType(); if ( status == Type.ONLINE) { ivStatusIcon.setImageResource(R.drawable.online_icon); } else { ivStatusIcon.setImageResource(R.drawable.offline_icon); } //Nickname String name = friend.getChatID(); if ( friend.hasName()) { name = friend.getName(); } tvNickName.setText(name); } } In the main activity, I have a custom listview: lvMainListView, with an custom adapter (whose class extends ArrayAdapter - and off course: override the method getView ), the data set of the adapter is: ArrayList<Friend> friends: private class FriendRowAdapter extends ArrayAdapter<Friend> { public FriendRowAdapter(Context applicationContext, int friendlistRow, ArrayList<Friend> friends) { super(applicationContext, friendlistRow, friends); } @Override public View getView(int position,View convertView,ViewGroup parent) { Friend friend = getItem(position); FriendRowItem row = (FriendRowItem) convertView; if ( row == null ) { row = new FriendRowItem(ShowFriendsList.this.getApplicationContext()); } row.setPropeties( friend ); return row; } } the problem is when I change the status of a friend from OFFLINE to ONLINE, then call notifyDataSetChanged(), nothing happens : the status icon of that friend doesn't change. I tried debugging, and saw the code: notifyDataSetChanged() get called, but the custom getView() is not fired ! Can you please tell me, that is normal in Android, or did I do something wrong ? (I am using Android 1.5). Thank you in advance, Son

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  • How do I run all my PHPUnit tests?

    - by JJ
    I have script called Script.php and tests for it in Tests/Script.php, but when I run phpunit Tests it does not execute any tests in my test file. How do I run all my tests with phpunit? PHPUnit 3.3.17, PHP 5.2.6-3ubuntu4.2, latest Ubuntu Output: $ phpunit Tests PHPUnit 3.3.17 by Sebastian Bergmann. Time: 0 seconds OK (0 tests, 0 assertions) And here are my script and test files: Script.php <?php function returnsTrue() { return TRUE; } ?> Tests/Script.php <?php require_once 'PHPUnit/Framework.php'; require_once 'Script.php' class TestingOne extends PHPUnit_Framework_TestCase { public function testTrue() { $this->assertEquals(TRUE, returnsTrue()); } public function testFalse() { $this->assertEquals(FALSE, returnsTrue()); } } class TestingTwo extends PHPUnit_Framework_TestCase { public function testTrue() { $this->assertEquals(TRUE, returnsTrue()); } public function testFalse() { $this->assertEquals(FALSE, returnsTrue()); } } ?>

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  • String replacement problem.

    - by fastcodejava
    I want to provide some template for a code generator I am developing. A typical pattern for class is : public ${class_type} ${class_name} extends ${super_class} implements ${interfaces} { ${class_body} } Problem is if super_class is blank or interfaces. I replace extends ${super_class} with empty string. But I get extra spaces. So a class with no super_class and interfaces end up like : public class Foo { //see the extra spaces before {? ${class_body} } I know I can replace multiple spaces with single, but is there any better approach?

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  • Kohana ORM Aliasing and "Trying to get property of non-object"

    - by Toto
    I have the following tables in the database: teams: id name matches: id team1_id team2_id I've defined the following ORM models in my Kohana application: class Match_Model extends ORM { protected $belongs_to = array('team1_id' => 'team', 'team2_id' => 'team'); } class Team_Model extends ORM { protected $has_many = array('matches'); } The following code in a controller: $match = ORM::factory('match',1); echo $match->team1_id->name; /* <-- */ Is throwing the following error on the linke marked with /* <--- */: Trying to get property of non-object The framework is yielding the value of the foreign key instead of a reference to a Match_Model instance as it should (giving the has_many and belongs_to properties stated). Am I missing something? Note: Just in case, I've added the irregular plural 'match' => 'matches' in application/config/inflector.php

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  • mutiple database in codeigniter

    - by adisembiring
    Hi ..., I'm trying to implement mutiple database in CI. My code Is here: //database.php $active_group = "default"; $active_record = TRUE; $db['default']['hostname'] = "localhost"; $db['default']['username'] = "root"; $db['default']['password'] = "root"; $db['default']['database'] = "ravelex"; $db['default']['dbdriver'] = "mysql"; $db['default']['dbprefix'] = "rvx_"; $db['default']['pconnect'] = TRUE; $db['default']['db_debug'] = TRUE; $db['default']['cache_on'] = FALSE; $db['default']['cachedir'] = ""; $db['default']['char_set'] = "utf8"; $db['default']['dbcollat'] = "utf8_general_ci"; $db['smf']['hostname'] = "localhost"; $db['smf']['username'] = "root"; $db['smf']['password'] = "root"; $db['smf']['database'] = "smf"; $db['smf']['dbdriver'] = "mysql"; $db['smf']['dbprefix'] = "smf_"; $db['smf']['pconnect'] = TRUE; $db['smf']['db_debug'] = TRUE; $db['smf']['cache_on'] = FALSE; $db['smf']['cachedir'] = ""; $db['smf']['char_set'] = "utf8"; $db['smf']['dbcollat'] = "utf8_general_ci"; The model is //user_model.php class user_model extends Model { private $ravelex_db; function user_model() { parent::Model(); $this->ravelex_db = $this->load->database('default', TRUE); } function find_all() { print_r($this->ravelex_db); $q = $this->ravelex_db->get('users'); return $q->result(); } } //smf_user_model.php class smf_user_model extends Model { private $smf_db; function smf_user_model() { parent::Model(); $this->smf_db = $this->load->database('smf', TRUE); } function find_all() { $q = $this->smf_db->get('members'); return $q->result(); } } Controller tester class mutipledb extends Controller { function mutipledb() { parent::Controller(); $this->load->database(); $this->load->model('user_model'); $this->load->model('smf_user_model'); } function index() { print_r($this->user_model->find_all()); print_r($this->smf_user_model->find_all()); } } There are some error, The first database uses the second database name. But it still use it's prefix. The error is A Database Error Occurred Error Number: 1146 Table 'smf.rvx_users' doesn't exist SELECT * FROM (`rvx_users`)

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